added a build entry for state_feedback_loop.h
diff --git a/frc971/control_loops/control_loops.gyp b/frc971/control_loops/control_loops.gyp
index f9f160f..cdb76c8 100644
--- a/frc971/control_loops/control_loops.gyp
+++ b/frc971/control_loops/control_loops.gyp
@@ -7,6 +7,19 @@
   },
   'targets': [
     {
+      'target_name': 'state_feedback_loop',
+      'type': 'static_library',
+      'sources': [
+        #'state_feedback_loop.h'
+      ],
+      'dependencies': [
+        '<(EXTERNALS):eigen',
+      ],
+      'export_dependent_settings': [
+        '<(EXTERNALS):eigen',
+      ],
+    },
+    {
       'target_name': 'control_loops',
       'type': 'static_library',
       'sources': ['<@(loop_files)'],